Apparatus for building concrete structures.



L. A. BARNES. APPARATUS FOR BUILDING CONCRETE STRUCTURES.

APPLICATION FILED FEB. l, l9i6- 1,21 1,812.-

A Patented J an. 9, 1917.

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RPARATUS FOR BUILDING CONCRETE STRUCTURES.

Specification of Letters i'atent.

Patented Jan. 9, 1917.

Application filed February 1, 1916. Serial No. 75,529.

To all whom it may concern:

Be it known that 1, Law A. BARNES, a citizen of the United States, residing at 5120 Calumet avenue, Chicago, in the county of Cook and State of Illinois, have invented a new and useful Improvement in Apparatus for Building Concrete Structures, of which the following is a specification.

section. Fig. 2 is a plan view of a base plate or section employed. Fig; 3 is asection taken at the line 3 on Fig. 1 and viewed in the direction of the arrow. Fig. 4 is a broken, enlarged, view in elevation of a portion of the shoring, or support, for the base plate of the mold, portions thereof being shown in section. Fig. 5 is a similar view of the upper portion of the shoring and a portion of the base-plate; and Fig. 6, a similar view of the lower end of the shoring.

As a preface to thefollowing description of m invention, it maybe stated that, in

practice, the boards, forming 'the moldvproper, are supported at intervals'from supports, or shoring, and as these supports are of the same construction, I have shown only one of them in the drawings.

'According to the preferred illustrated embodiment of my invention, the apparatus comprisesa standard 7, a cross-member, or

base-plate, 8 supported on the upper end of the standard 7, and uprights 9 with bracemembers 10 supported on the base-plate and confining the mold-boards, as hereinafter described. The standard 7 is formed of telescoping tubes 11 and 12, the lower, innermost, tube 11 being provided at its lower end with a base 13 at which the standard rests upon the ground. The outer tube 12 contains at intervals along its length, openings 14 and 15, these openings being disposed at anangle to eachother as represent ed to avoid undue weakening of the structure, though if desired but one series only may be used. The openings 14 and 15 are provided for receiving a pin 16 whichextends across the upper end of the tube 11 and serves to support the tube 12, with the parts carried thereby, on the tube 11, the pin being insertible into any of the openings 14: and 15 and this adjustment'of the tube serving as a comparatively coarse adjustment of the base-plate 8 in a vertical plane.

The upper end of the tube 12 is internally threaded, and screwing therein is the threaded depending section 17 of a plate-member 18 which fits fiatwise against, and is secured to, the underside of the base-plate 8 the latter, by preference, being formed of structural'channel iron, as represented, between the flanges 19 of which the plate-member 18, is located. The threaded connection between the plate-member l8 and the tube 12 affords means for accurately adjusting the baseplate 8 vertically to the desired height.

In the particular illustrated embodiment,

the uprights 9 and braces 10 are formed of bars of T-sh'ape in cross-section, the web of the base-plate. 8 containing at opposite ends thereof, series 20 and 21 of openings ofT- shape and of a size for receiving the uprights 9, these series of openings being arranged, as shown, as to cause the flat sides ofgthe uprights 9', when inserted therein, to extend transversely of the base-platef8 and directly oppose each other. The braces 10 are preferably provided at their upper ends with bar-sections 22 rigidly secured thereto,

of the'adjacent uprights 9.

In practice the base-plate 8 is adjusted to and pivoted, as indicated at 23 to the flanges I the desired height by first adjusting the tube 12 on the tube 11, as by sliding it thereon, the-pin 16 being then inserted into the opening in the tube 12 immediately above the top of the tube 11, and thereupon rotating the tube 12 on the tube 11, as through the medium of a bar (not shown) inserted into one of the openings Her 15 in the tube: 12, to effect the desired fine adjustment of the base-plate-S. The boards forming the bottom of the mold are then laid upon the top of the plate 8, these boards, represented at 24, extending across a plurality of the base-plates 8. The boards for forming the side-walls 25 of the mold are preferably assembled with the uprights, on the round, these boards bein nailed, or otherwise fastened, to the uprlghts 9 to flatwise oppose the flat sides of these uprights. The boards for forming these side-walls, thus assembled with the uprights 9, are then applied to position at the opposite edges of the bottom-Wall of the mold, the lower ends of the uprights 9 being inserted=into the T-openlngs 1n the plate 8 immediately beyond the edges of the bottom-Wall 24: and the lower ends of the braces 10, which latter are preferably so disposed as to cause the flat sides thereof to be uppermost, inserted into adjacent ones of these opjenings for interlocking them with the base-plate & to brace the uprights 9, as shown in Fig. 2. The openings 20'and 21 are of slightly greater dimensions than the cross-sectional dimensions of the uprights 9, whereby the latter loosely fit these openings, permitting them to be braced in inclined position, if desired, in which case the lower ends of the braces 10 would be adjust-' ed farther away from the lower edges of the side-walls 25 and engage those of the openings 20 and 21 adjacent thereto, this adjustment of the uprights 9 being desirable, as, for example, where beams having downwardly converging side-walls are to be molded.

While I have'illustrated and described a particular embodiment of my invention I do not wish to be understood as limiting it thereto, as the same may be modified and altered without departing from the spirit of my invention.

, What I claim as new and desire to se-' cure by Letters Patent is 1. In apparatus of the character set forth, the combination of a plate containing openings in its upper surface, uprights adapted to be inserted.v into said openings, and braces for-said uprights having flanges and adapted to enter others of said openings and bear at said flanges against said plate.

2. In apparatus of the character set forth, the combination of a plate containing openings of angular shape in its upper surface,

uprights adapted to enter said openings, and braces for said uprights having flanges and adapted to enter others of said openingsand bear at said flanges against said plate.

' 3. In apparatus of the character set forth,

the combination of a plate containing openings of angular shape in its upper surface, uprights of angle-shape in cross-section adapted to enter said openings, and braces for said uprights having flanges and adapted to enter others of said openings and bear at said flanges against said plate.

4. In apparatus of the character set forth, the combination of a plate containing openings of angular shape in its upper surface, portions of said openings extending lengthwise of said plate and other portions crosswise thereof, the cross-wise disposed portions of said openings at one end of the plate being. disposed at one end of each of the lengthwise-extending portions of said openings, and the cross-wise disposed fportions of said openings at the other end- 0 said plate being disposed at the opposite end of the lengthwise-extending portions of said openings, uprights extending into certain of said openings at opposite ends of said plate, and braces for said uprights having flanges and extending into others of said openings in said plate and bearing'at said flanges against said plate.

5. In apparatus of the character set forth, the combination of a plate containing 0 enings of angular shape in its upper sur ace, portions of said openings extending lengthwise of said plate and other portions crosswise thereof, the cross-wise disposed portions of said openings at one end of the plate being disposed at one end of each of the lengthwise-extending portions of said openings, and the cross-wise disposed portions of said openings at the other end of said plate being disposed at the opposite end of the lengthwise-extending portions of said openings, uprights having flanges extending into certain of said openings at opposite ends of said plate, and braces for said up rights having flanges and extending into others of said openings in said plate and bearing at said flanges against said plate.

6. In apparatus of the character set forth, the combination of a late containing openings in its upper sur ace, uprights adapted to be inserted into said openings, and braces for said uprights pivoted thereto and having flanges and adapted to enter other of said openings and bear at said flanges against said plate.

7 In apparatus of the character set forth, the combination of a plate containing openings of angular shape in its upper surface, uprights adapted to enter said openings, and braces for sald uprights pivoted thereto and having flanges and adapted to enter other of said openings and bear at said flanges ings, and the cross-Wise disposed portions of having flanges and extending into others of said openings at the other end of said plate said openings in said plate and bearing at being disposed at the opposite end of the said flanges against said plate.

lengthwise-extending portions of said open- LEW A. BARNES. 5 ings, uprights extending into certain of said In presence ofopenings at opposite ends of said plate and A. C. FISCHER,

braces for said uprights pivoted thereto and D. C. THORSEN. 

